IE10: note we are stll running tests with it, but not actively supporting it

//cc @kvz @lakesare @goto-bus-stop @ifedapoolarewaju

README.md

@@ -148,7 +148,9 @@ The ⓒ mark means that [`@uppy/companion`](https://uppy.io/docs/companion), a s
   <img src="https://saucelabs.com/browser-matrix/transloadit-uppy.svg" alt="Sauce Test Status"/>
 </a>
 
-We aim to support IE10+ and recent versions of Safari, Edge, Chrome, Firefox, and Opera.
+We aim to support IE11+ and recent versions of Safari, Edge, Chrome, Firefox, and Opera.
+
+We still run end to end tests with IE10, but we are not actively supporting it or fixing visual / minor issues.
 
 ### Polyfills
 

website/src/docs/index.md

@@ -145,7 +145,9 @@ You can also use a pre-built bundle from Transloadit's CDN: Edgly. `Uppy` will a
   <img src="https://saucelabs.com/browser-matrix/transloadit-uppy.svg" alt="Sauce Test Status"/>
 </a>
 
-We currently aim to support IE10+ and recent versions of Safari, Edge, Chrome, Firefox and Opera.
+We currently aim to support IE11+ and recent versions of Safari, Edge, Chrome, Firefox and Opera.
+
+We still run end to end tests with IE10, but we are not actively supporting it or fixing visual / minor issues.
 
 ### Polyfills